“Out of My Head” explores the neurological disorder known as migraine headaches that afflict nearly a billion people worldwide.

Director/screenwriter Susana Styron had a very personal reason to make a film about the debilitating effects of migraines. Her daughter Emma is a chronic sufferer, having experienced her first migraine attack when she was just 14 years old.

Helping Emma struggle with the condition spurred the filmmaker to explore the subject in “Out of My Head,” her informative and engrossing documentary receiving its world premiere in a theatrical engagement as part of the Museum of Modern Art’s Doc Fortnight 2018.

In case you were wondering what Virginia Woolf, Thomas Jefferson, Georgia O’Keefe and Thomas Jefferson had in common, it’s that they all suffered from migraines. Among the notables currently afflicted is writer Joan Didion, seen in the film reading from “In Bed,” her essay about the subject.